SOLVED Duo cast Voltage switch Question

[mekrob69]

Good evening,

So I just finished my Duocast build today it fired right up and sounds amazing, both footswitched work and all 4 knobs go as expected. But when I go to try the voltage toggle I was met with disappointment. It works in the left position but in the right position (27v I believe) it goes makes a pop and then goes silent, if I’m on the high gain channel sometimes I get a nasty sputtery fuzz sound for a second. If I cranked the gain and volume on the low gain side I can hear the faintest cleanish signal.

I did not solder the jumper on the back of the pcb, but read I shouldn’t with a LT1054. I have read a similar thread and it was a bad toggle switch. Does this sound like it could be the culprit?

Thank you all for your help

 

[DAJE]

I didn't solder any jumpers either, but mine works at 27V.

 

[mekrob69]

I didn't solder any jumpers either, but mine works at 27V.

Did you use a LT1054?

 

[DAJE]

Did you use a LT1054?

Yep.

 

[HamishR]

Is C9 oriented the right way?

 

[music6000]

1. C9 ???????
2. Can't make out your Resistor Values, need better Photo's !

 

[mekrob69]

Is C9 oriented the right way?

It was not! Thank you so much, I looked at this board so long I have no idea how I overlooked this. My first backwards component, I’ve switch the jacks before but never a polarized piece.

What a great sounding pedal!

 

[mekrob69]

1. C9 ???????
2. Can't make out your Resistor Values, need better Photo's !

It was C9, I can’t believe I overlooked this. But now it works perfectly and sounds great.

Thank you so much!